Optical fiber multi-parameter logging device

Abstract

The invention belongs to the technical field of well logging, and discloses an optical fiber multi-parameter well logging device which comprises a cart, a placing table is fixedly installed at the top end of the cart, a main control box is arranged at the top end of the placing table, an electric capstan is fixedly installed at the position, below the placing table, in the cart, and a well logging cable is wound on the outer surface of the electric capstan. A telescopic supporting arm is fixedly installed at one end of the cart, a well descending pulley is fixedly installed at one end of the telescopic supporting arm, a depth counter is fixedly installed at one end of the well descending pulley, the outer surface of the logging cable is slidably connected to the outer surface of the well descending pulley, and a logging assembly is fixedly connected to one end of the logging cable. The height change of the logging assembly can be automatically achieved, the situation that when the position of the logging assembly needs to be finely adjusted, fixation needs to be removed for adjustment is avoided, more convenient logging operation is achieved, the logging precision and efficiency are greatly improved, and more comprehensive data support is provided for a user.

Description

Technical Field

[0001] The invention belongs to the technical field of well logging, and in particular relates to an optical fiber multi-parameter well logging device. Background Art

[0002] Fiber optic sensing technology has developed rapidly in recent years. Its small size, light weight, strong anti-interference ability, high detection sensitivity, and the ability to realize distributed and multi-parameter measurement have provided a new solution for improving the level of well logging technology. At present, the application of fiber optic sensing well logging technology has been realized in the fields of oil and gas, hydrology, geological exploration, etc., to achieve real-time continuous measurement and precise analysis of multiple parameters, greatly improve the accuracy and efficiency of well logging, and provide users with more comprehensive data support.

[0003] However, when the existing fiber optic multi-parameter logging device performs logging work, the logging component needs to be fixed first. When the position of the logging component needs to be fine-tuned, the fixation operation needs to be released and the position needs to be adjusted before repeating the fixation operation, which increases the complexity of the operation and the time cost. The height change of the logging component cannot be automatically realized, thereby affecting the logging efficiency. Summary of the invention

[0004] The present invention aims at the problem that in the prior art, when the optical fiber multi-parameter logging device performs logging work, the logging component needs to be fixed first. When the position of the logging component needs to be fine-tuned, the fixing operation needs to be repeated after the position is adjusted, which increases the operation complexity and time cost, and the height change of the logging component cannot be automatically realized, thereby affecting the logging efficiency. The present invention proposes the following technical solutions: A fiber optic multi-parameter logging device comprises a cart, a placing platform is fixedly installed on the top of the cart, a main control box is arranged on the top of the placing platform, an electric winch is fixedly installed inside the cart below the placing platform, a logging cable is wound on the outer surface of the electric winch, a retractable support arm is fixedly installed on one end of the cart, a downhole pulley is fixedly installed on one end of the retractable support arm, a depth counter is fixedly installed on one end of the downhole pulley, the outer surface of the logging cable is slidably connected to the outer surface of the downhole pulley, and a logging component is fixedly connected to one end of the logging cable.

[0005] Preferably, the logging assembly includes a movable cylinder fixedly connected to one end of the logging cable, a glass cover is fixedly installed inside the movable cylinder, a pipeline endoscope is rotatably connected to the movable cylinder at a position inside the glass cover, the bottom end of the pipeline endoscope is fixedly connected to a first motor, the outer surface of the first motor is fixedly installed inside the movable cylinder, the bottom end of the movable cylinder is fixedly connected to an electric telescopic rod, the bottom end of the electric telescopic rod is fixedly connected to a fixed rod, the top outer surface of the fixed rod is fixedly connected to a first fixing ring, the bottom end of the first fixing ring is fixedly connected to a plurality of nickel alloy sheets, one end of the nickel alloy sheet is fixedly connected to a second fixing ring, the bottom end of the second fixing ring is fixedly connected to a movable rod, the outer surface of the movable rod is movably connected to the inside of the fixed rod, a second motor is fixedly installed inside the top end of the fixed rod, a threaded rod is fixedly connected to the output end of the second motor, the top end of the movable rod is fixedly connected to a threaded sleeve, the threaded rod is threadedly connected to the threaded sleeve, the top outer surface of the movable rod is fixedly connected to a slider, and the outer surface of the slider is slidably connected to the inside of the fixed rod.

[0006] Preferably, the bottom end of the fixed rod is fixedly connected to a first magnetic ring, the bottom end of the fixed rod is fixedly connected to a sealing ring at an inner position of the first magnetic ring, and the outer surface of the movable rod is fixedly connected to a second magnetic ring at a position below the first magnetic ring.

[0007] Preferably, a positioning plate is fixedly connected to the interior of the fixing rod below the second motor, the outer surface of the threaded rod is connected to the interior of the positioning plate via threads, and pressure-sensitive starters are fixedly installed at both sides of the bottom end of the positioning plate.

[0008] Preferably, a plurality of rubber sheets are bonded at equal intervals at the midpoint of the outer surface of the nickel alloy sheet, and the shape of the rubber sheet is a rectangular parallelepiped.

[0009] Preferably, the sealing ring is made of rubber, and the inner surface of the sealing ring and the outer surface of the movable rod are in contact with each other.

[0010] Preferably, the sliding block is rectangular in shape, a sliding groove is provided inside the fixing rod at a position corresponding to the outer surface of the sliding block, and the outer surface of the sliding block is slidably connected to the inside of the sliding groove.

[0011] Preferably, the horizontal height of the bottom end of the positioning plate and the horizontal height of the top end of the slide groove are on the same horizontal line.

[0012] Preferably, the center of the first magnetic circle and the center of the second magnetic circle are on the same vertical line.

[0013] The beneficial effects of the present invention are: (1) It can automatically change the height of the logging component, avoiding the need to release the fixation for adjustment when the position of the logging component needs to be fine-tuned, achieving more convenient logging operations, greatly improving the accuracy and efficiency of logging, and providing users with more comprehensive data support.

[0014] (2) It can enhance the connection stability between the fixed rod and the movable rod, and effectively resist the rebound of the nickel alloy sheet due to elasticity, thereby ensuring that the nickel alloy sheet and the well wall maintain a stable connection state. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Shown is a schematic diagram of the structure of an optical fiber multi-parameter logging device; Figure 2 Shown is a schematic diagram of the installation structure of the electric winch; Figure 3 Shown is a schematic diagram of the installation structure of the logging assembly; Figure 4 Shown is a schematic diagram of the installation structure of the movable rod; Figure 5 It shows Figure 4 Schematic diagram of the installation structure in area A; Figure 6 Shown is a schematic diagram of the installation structure of the positioning plate; Figure 7 Shown is a schematic diagram of the installation structure of the pressure-sensitive actuator; In the figure: 1. cart; 2. placement table; 3. main control box; 4. electric winch; 5. logging cable; 6. retractable support arm; 7. downhole pulley; 8. depth counter; 9. logging assembly; 91. movable cylinder; 92. glass cover; 93. pipeline endoscope; 94. first motor; 95. electric telescopic rod; 96. fixed rod; 97. first fixed ring; 98. nickel alloy sheet; 99. second fixed ring; 910. movable rod; 911. second motor; 912. threaded rod; 913. threaded sleeve; 914. slider; 10. first magnetic ring; 11. sealing ring; 12. second magnetic ring; 13. rubber sheet; 14. positioning plate; 15. pressure-sensitive starter. DETAILED DESCRIPTION

[0016] In order to make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0017] Example 1 The present invention provides an optical fiber multi-parameter logging device, such as Figures 1 to 7As shown, it includes a trolley 1, a placing table 2 is fixedly installed on the top of the trolley 1, a main control box 3 is arranged on the top of the placing table 2, an electric winch 4 is fixedly installed at a position below the placing table 2 inside the trolley 1, a logging cable 5 is wound on the outer surface of the electric winch 4, and the logging cable 5 is electrically connected to the main control box 3, a retractable support arm 6 is fixedly installed at one end of the trolley 1, a downhole pulley 7 is fixedly installed at one end of the retractable support arm 6, a depth counter 8 is fixedly installed at one end of the downhole pulley 7, the outer surface of the logging cable 5 is slidably connected to the outer surface of the downhole pulley 7, and a logging component 9 is fixedly connected to one end of the logging cable 5.

[0018] like Figure 1 and Figure 6As shown, the logging assembly 9 includes a movable cylinder 91 fixedly connected to one end of the logging cable 5, a glass cover 92 is fixedly installed inside the movable cylinder 91, a pipeline endoscope 93 is rotatably connected to the movable cylinder 91 at an inner position of the glass cover 92, a first motor 94 is fixedly connected to the bottom end of the pipeline endoscope 93, an outer surface of the first motor 94 is fixedly installed inside the movable cylinder 91, an electric telescopic rod 95 is fixedly connected to the bottom end of the movable cylinder 91, a fixed rod 96 is fixedly connected to the bottom end of the electric telescopic rod 95, a first fixed ring 97 is fixedly connected to the outer surface of the top end of the fixed rod 96, a plurality of nickel alloy sheets 98 are fixedly connected to the bottom end of the first fixed ring 97, a second fixed ring 99 is fixedly connected to one end of the nickel alloy sheet 98, and a second fixed ring 99 is fixedly connected to the bottom end of the second fixed ring 99. A movable rod 910 is connected, and the outer surface of the movable rod 910 is movably connected to the inside of the fixed rod 96. A second motor 911 is fixedly installed inside the top of the fixed rod 96, and a threaded rod 912 is fixedly connected to the output end of the second motor 911. A threaded sleeve 913 is fixedly connected to the top of the movable rod 910. The threaded rod 912 is threadedly connected to the threaded sleeve 913. A slider 914 is fixedly connected to the outer surface of the top of the movable rod 910. The outer surface of the slider 914 is slidably connected to the inside of the fixed rod 96. When logging work is required, the electric winch 4 is started through the main control box 3, and the rotation of the electric winch 4 drives the logging cable 5 to rotate synchronously, thereby releasing the logging cable 5, and the logging cable 5 enters the well along the outer surface of the downhole pulley 7. The depth counter 8 is real-time The lowering distance is recorded to ensure that the logging assembly 9 is accurately positioned to the target depth. When the logging assembly 9 reaches the target depth, the second motor 911 is started through the main control box 3. The output end of the second motor 911 rotates to drive the threaded rod 912 to rotate synchronously. The threaded rod 912 rotates to drive the threaded sleeve 913 to move upward. The threaded sleeve 913 moves upward to drive the movable rod 910 to move synchronously. The movable rod 910 moves upward to drive the slider 914 to slide synchronously inside the slide groove. As the movable rod 910 moves, the second fixed ring 99 will be driven to move synchronously. Since the first fixed ring 97 does not move, the nickel alloy sheet 98 is squeezed and bent outward, so that the nickel alloy sheet 98 and the rubber sheet 13 contact and squeeze the well wall to form a fixation. At this time, the logging is completed. The component 9 is fixed. As the movable rod 910 moves, when the top of the movable rod 910 contacts and triggers the pressure-sensitive starter 15, the electric telescopic rod 95 and the first motor 94 are started respectively. The electric telescopic rod 95 can drive the movable cylinder 91 to move. The movement of the movable cylinder 91 drives the glass cover 92 and the pipeline endoscope 93 to move synchronously. The first motor 94 can drive the pipeline endoscope 93 to rotate 360° and perform high-definition optical scanning of the well wall. The main control box 3 receives image data in real time and can automatically realize the height change of the logging component 9, avoiding the need to release the fixation for adjustment when the position of the logging component 9 needs to be fine-tuned, thereby realizing more convenient logging operations, greatly improving the accuracy and efficiency of logging, and providing users with more comprehensive data support.

[0019] like Figure 1 and Figure 7 As shown, the bottom end of the fixed rod 96 is fixedly connected to the first magnetic circle 10, and the bottom end of the fixed rod 96 is located at the inner side of the first magnetic circle 10 and is fixedly connected to the sealing ring 11. The outer surface of the movable rod 910 is located below the first magnetic circle 10 and is fixedly connected to the second magnetic circle 12. As the movable rod 910 drives the second magnetic circle 12 to move toward the fixed rod 96, as the second magnetic circle 12 slowly moves, the first magnetic circle 10 and the second magnetic circle 12 are brought close to each other, and finally the two are attracted to each other due to the magnetic force. Since the first magnetic circle 10 and the second magnetic circle 12 are attracted to each other, the connection stability between the fixed rod 96 and the movable rod 910 is enhanced, thereby preventing the nickel alloy sheet 98 from rebounding due to elasticity, resulting in unstable connection between the nickel alloy sheet 98 and the well wall, and can enhance the connection stability between the fixed rod 96 and the movable rod 910, effectively resist the rebound of the nickel alloy sheet 98 due to elasticity, thereby ensuring that the nickel alloy sheet 98 and the well wall maintain a stable connection state.

[0020] like Figure 1 and Figure 6 As shown, the interior of the fixed rod 96 is fixedly connected to a positioning plate 14 at a position below the second motor 911, the outer surface of the threaded rod 912 is connected to the interior of the positioning plate 14 by threads, and pressure-sensitive starters 15 are fixedly installed on both sides of the bottom end of the positioning plate 14. One pressure-sensitive starter 15 is electrically connected to the electric telescopic rod 95, and the other pressure-sensitive starter 15 is electrically connected to the first motor 94. As the movable rod 910 moves, when the top of the movable rod 910 contacts and triggers the pressure-sensitive starter 15, the electric telescopic rod 95 and the first motor 94 are started respectively, ensuring that after the well logging assembly 9 is fixed, the pipeline endoscope 93 is fine-tuned, thereby achieving a delayed linkage effect.

[0021] like Figure 1 and Figure 3 As shown, a plurality of rubber sheets 13 are equidistantly bonded at the midpoint of the outer surface of the nickel alloy sheet 98. The rubber sheet 13 is in the shape of a rectangular parallelepiped. The rubber sheet 13 can increase the friction when in contact with the well wall, thereby improving the connection stability between the nickel alloy sheet 98 and the well wall.

[0022] like Figure 1 and Figure 5 As shown, the sealing ring 11 is made of rubber, and the inner surface of the sealing ring 11 and the outer surface of the movable rod 910 fit each other to form a tight sealing layer, thereby preventing external water from entering and achieving a waterproof effect.

[0023] like Figure 1 and Figure 7As shown, the shape of the slider 914 is rectangular, and a sliding groove is opened inside the fixed rod 96 at a position corresponding to the outer surface of the slider 914. The outer surface of the slider 914 is slidably connected to the inside of the sliding groove, ensuring that the position of the fixed rod 96 does not change when it moves, effectively improving the stability of the fixed rod 96 when it moves.

[0024] like Figure 1 and Figure 6 As shown, the horizontal height of the bottom end of the positioning plate 14 is on the same horizontal line as the horizontal height of the top end of the slide slot, ensuring that the movable rod 910 can trigger the pressure-sensitive actuator 15 when reaching the top end, ensuring that a linkage effect can be formed between the movable rod 910 and the pressure-sensitive actuator 15.

[0025] like Figure 1 and Figure 7 As shown, the center of the first magnetic circle 10 and the center of the second magnetic circle 12 are on the same vertical line, ensuring that when the first magnetic circle 10 and the second magnetic circle 12 are attracted to each other by magnetic force, their positions will not shift, thereby ensuring the connection stability between the first magnetic circle 10 and the second magnetic circle 12.

[0026] Working principle: During actual use of the device, when logging work is required, the electric winch 4 is started through the main control box 3. The rotation of the electric winch 4 drives the logging cable 5 to rotate synchronously, thereby releasing the logging cable 5. The logging cable 5 enters the wellbore along the outer surface of the downhole pulley 7. The depth counter 8 records the lowering distance in real time to ensure that the logging assembly 9 is accurately positioned to the target depth. When the logging assembly 9 reaches the target depth, the second motor 911 is started through the main control box 3. The output end of the second motor 911 rotates to drive the threaded rod 912 to rotate synchronously. The rotation of the threaded rod 912 drives the threaded sleeve 913 to move upward. The upward movement of the threaded sleeve 913 drives the movable rod 910 to move synchronously. The upward movement of the movable rod 910 drives the slider 914 to slide synchronously inside the slide groove. As the movable rod 910 moves, it will drive the second fixed ring 99 to move synchronously. Since the first fixed ring 97 does not move, The nickel alloy sheet 98 is squeezed and bent outward, so that the nickel alloy sheet 98 and the rubber sheet 13 contact and squeeze the well wall to form a fixation. At this time, the well logging component 9 is fixed. With the movement of the movable rod 910, when the top of the movable rod 910 contacts and triggers the pressure-sensitive starter 15, the electric telescopic rod 95 and the first motor 94 are respectively started. The electric telescopic rod 95 can drive the movable cylinder 91 to move. The movement of the movable cylinder 91 drives the glass cover 92 and the pipeline endoscope 93 to move synchronously. The first motor 94 can drive the pipeline endoscope 93 to rotate 360° to perform a high-definition optical scan of the well wall. The main control box 3 receives image data in real time, and can automatically realize the height change of the well logging component 9, avoiding the need to release the fixation for adjustment when the position of the well logging component 9 needs to be fine-tuned, so as to achieve more convenient well logging operations, greatly improve the accuracy and efficiency of well logging, and provide users with more comprehensive data support; Then, the movable rod 910 drives the second magnetic circle 12 to move toward the fixed rod 96. As the second magnetic circle 12 slowly moves, the first magnetic circle 10 and the second magnetic circle 12 are brought closer to each other. Finally, due to the action of magnetic force, the two are attracted to each other. Since the first magnetic circle 10 and the second magnetic circle 12 are attracted to each other, the connection stability between the fixed rod 96 and the movable rod 910 is enhanced, thereby preventing the nickel alloy sheet 98 from rebounding due to elasticity, resulting in an unstable connection between the nickel alloy sheet 98 and the well wall. The connection stability between the fixed rod 96 and the movable rod 910 can be enhanced, and the rebound of the nickel alloy sheet 98 caused by elasticity can be effectively resisted, thereby ensuring that the nickel alloy sheet 98 and the well wall maintain a stable connection state.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. An optical fiber multi-parameter logging device, characterized in that: The invention comprises a trolley (1), a placing table (2) is fixedly mounted on the top of the trolley (1), a main control box (3) is arranged on the top of the placing table (2), an electric winch (4) is fixedly mounted inside the trolley (1) at a position below the placing table (2), a logging cable (5) is wound around the outer surface of the electric winch (4), a retractable support arm (6) is fixedly mounted on one end of the trolley (1), a downhole pulley (7) is fixedly mounted on one end of the retractable support arm (6), a depth counter (8) is fixedly mounted on one end of the downhole pulley (7), the outer surface of the logging cable (5) is slidably connected to the outer surface of the downhole pulley (7), and one end of the logging cable (5) is fixedly connected to a logging assembly (9).

2. The optical fiber multi-parameter logging device according to claim 1, characterized in that: The logging assembly (9) comprises a movable cylinder (91) fixedly connected to one end of the logging cable (5), a glass cover (92) fixedly installed inside the movable cylinder (91), a pipeline endoscope (93) rotatably connected inside the movable cylinder (91) at a position inside the glass cover (92), a first motor (94) fixedly connected to the bottom end of the pipeline endoscope (93), an outer surface of the first motor (94) fixedly installed inside the movable cylinder (91), an electric telescopic rod (95) fixedly connected to the bottom end of the movable cylinder (91), a fixed rod (96) fixedly connected to the bottom end of the electric telescopic rod (95), a first fixed ring (97) fixedly connected to the top outer surface of the fixed rod (96), and a plurality of fixed rings (97) fixedly connected to the bottom end of the first fixed ring (97). A nickel alloy sheet (98), wherein one end of the nickel alloy sheet (98) is fixedly connected to a second fixing ring (99), the bottom end of the second fixing ring (99) is fixedly connected to a movable rod (910), the outer surface of the movable rod (910) is movably connected to the inside of the fixing rod (96), a second motor (911) is fixedly installed inside the top end of the fixing rod (96), the output end of the second motor (911) is fixedly connected to a threaded rod (912), the top end of the movable rod (910) is fixedly connected to a threaded sleeve (913), the threaded rod (912) and the threaded sleeve (913) are threadedly connected, the top end of the movable rod (910) is fixedly connected to a slider (914), and the outer surface of the slider (914) is slidably connected to the inside of the fixing rod (96).

3. The optical fiber multi-parameter logging device according to claim 2, characterized in that: The bottom end of the fixed rod (96) is fixedly connected to a first magnetic ring (10), the bottom end of the fixed rod (96) is located inside the first magnetic ring (10) and is fixedly connected to a sealing ring (11), and the outer surface of the movable rod (910) is located below the first magnetic ring (10) and is fixedly connected to a second magnetic ring (12).

4. The optical fiber multi-parameter logging device according to claim 2, characterized in that: A positioning plate (14) is fixedly connected to the interior of the fixed rod (96) at a position below the second motor (911); the outer surface of the threaded rod (912) is connected to the interior of the positioning plate (14) via threads; and pressure-sensitive actuators (15) are fixedly installed at positions on both sides of the bottom end of the positioning plate (14).

5. The optical fiber multi-parameter logging device according to claim 2, characterized in that: A plurality of rubber sheets (13) are bonded at equal intervals at the midpoint of the outer surface of the nickel alloy sheet (98), and the rubber sheet (13) is in the shape of a rectangular parallelepiped.

6. The optical fiber multi-parameter logging device according to claim 3, characterized in that: The sealing ring (11) is made of rubber, and the inner surface of the sealing ring (11) and the outer surface of the movable rod (910) fit each other.

7. The optical fiber multi-parameter logging device according to claim 2, characterized in that: The sliding block (914) is rectangular in shape, a sliding groove is provided inside the fixing rod (96) at a position corresponding to the outer surface of the sliding block (914), and the outer surface of the sliding block (914) is slidably connected to the inside of the sliding groove.

8. The optical fiber multi-parameter logging device according to claim 4, characterized in that: The horizontal height of the bottom end of the positioning plate (14) and the horizontal height of the top end of the chute are on the same horizontal line.

9. The optical fiber multi-parameter logging device according to claim 3, characterized in that: The center of the first magnetic circle (10) and the center of the second magnetic circle (12) are located on the same vertical line.

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